Riding-plow.



No. 68|,948. Patented Sept. 3, |90I. J. W. BROWN.

v RIDING PLUW.

(Application med me. zo, 1900.) (No Model.) 3 Sheets-Sheet l.

\ l @jf v Rs cu. PnofoLn'Hn.. wAsHmaron u c Patented Sept. 3, |901. J.W. BRUWN.

No. es|,94s.

B l D l N G P L 0W.

(Application filed Dec. 26, 1900.)

3 Sheets-Sheet 2.

(No Model.)

5M, Ae fe e we Patented Sept. 3, I90l.

J. W.V BROWN.

RIDING PLOW.

(Application filed Dec. 26, 1900.)

3 Sheets-Sheet 3.

(No Model.)

UNITED STATES PATENT EETCE.

JOHN IV, BROIVN, OF QUINCY, ILLINOIS, ASSIGNOR TO THE COLLINS 'PLOWCOMPANY, OF SAME PLACE.

RIDING-PLOW.

SPECIFICATION forming part of Letters Patent No. 681,948, datedSeptember 3, 1901. Application led December 26, 1900. Serial No. 41,012.(No model.)

To all whom, it nea/y concern:

Be it known that I, JOHN W. BROWN, a citizen of the United States,residing at Quincy, in the county of Adams and State of Illinois, haveinvented certain new and useful Improvements in Riding-Flows, of whichthe following is a full, clear, and exact description, reference beinghad to the accompanying drawings, forming part of this specification.

My invention relates to a riding-plow, and has for its object to afforda construction wherein in practical use the rear wheel4 of the plow isgiven an entirely-different movement in turning the plow to the rightfrom the movement given in turning the plow tothe left, whereby the plowmay be turned freely in either direction with a resulting free movementof all of the ground-wheels on their journals without either beingcramped.

My invention consists in features of novelty hereinafter fullydescribed, and pointed out in the claims.

Figure I is a top or plan view of the plow. Fig. II is a side view. Fig.III is a top view illustrating the positions assumed by the furrow-wheeland the rear wheel in turning the plow to the right. to Fig. III,illustrating the positions assumed by the furrow-wheel and the rearWheel in turning the plow to the left. Fig. V is a detail view showingthe irregular elliptic coggears by which the rear wheel is operated, thegears being shown in the positions assumed in Fig. III. Fig. VIis asimilar view to Fig. V of the cog-gears, showing them in the positionsassumed in Fig. IV. Fig. VII is an enlarged detail perspective view ofthe box-su pport and the boxes in which the shafts that carry thecog-gears are journaled. Fig. VIII is a detail side view of theadjustable toothed segment that receives the engagement of the dog ofthe plow-lifting lever. enlarged detail View of the furrow-wheel and itsaxle, the bearing-box being shown in vertical section. Fig. X is asectional View taken on the line X X, Fig. VIII.

1 designates the frame of the plow, to which the plows proper areconnected in the ordinary manner. i

2 designates the furrow or forward wheel,

Fig. IV is a similar viewV mounted on the adjustable spindle S of anupright axle 4, that is loosely j ournaled in a bearing-box 5, mountedin the forward end of the frame 1 at the forward right-hand corner.

thereof. This upright axle has applied to it a yoke 6, thatreceives theconnection of a bellcrank 7, pivotally mounted on the frame 1, andthrough the medium of which the frame is raised or lowered to lift theplows proper from the ground or lower them thereto. The bell-crank 7 ismanipulated by a hand-lever 8, pivoted to the frame 1 and havingconnection with the bell-crank by a rod 9. No invention per se is,however, claimed for the means just described for raising and loweringthe plows proper.

10 designates an arm adjustably fixed to the upper end of the uprightaxle 4 and adapted to receive the attachment of the draft-tongue l1, bywhich, upon the swinging of the tongue, the upright axle, andconsequently the furrow or forward wheel 2, is turned either to theright or left, according to the direction in which the tongue is moved.

Fixed to the axle 4 is a sprocket-wheel 12, reference to which will behereinafter made.

13 designates an upright axle journaled in a bearing-box 14, carried bya supplemental frame 15, attached to the main frame 1. The axle 13 isprovided at its lower end with a spindle 16, that receives the rearwheel 17.

' 18 designates an upright stub-shaft mounted and arranged to turn in ajournal-box 19, carried by the supplemental frame 15. (See Fig. VII.)Fixed to the stub-shaft 18 is a sprocket-wheel 20, preferably of thesame size and having the same number of teeth as the sprocket-wheel 12,carried by the upright axle 4 of the forward wheel 2. The sprocketwheels12 and 20are arranged in line with each other horizontally, and thesprocketwheel 12 receives a chain 21, while the wheel 2O receives achain 22. The chains 21 and 22 are connected by rods 23 and 24, that arejoined by turnbuckles 25. turnbuckles 25 the chains 21 and 22 and therods 23 and 24 may be tightened to the desired degree, and, furthermore,by loosening one of the turnbuckles and tightening the other therelative positions of the wheels 2 By the use of the IOO and 17 may bealtered through the connections between these wheels, as willhereinafter more fully appear.

26 designates a cog-gear fixed to the stubshaft 18. This gearisirregnlar in shape and is formed with a section 27, extending from apoint A (see Figs. Vand VI) and curving inwardly to a point B near theaxis of the shaft 18. This gear also has a toothed arm 28, that extendsfrom a straight edge 29 to a point C, the distance between the axis ofthe shaft 1S and the teeth of the arm 28 being less than the distancefrom the axis to the point A and greater than the distance from the axisto the point B.

30 designatesa cog-gear fixed to the upright axle 13 of the rear wheel17 and adapted to mesh with the teeth of the cog-gear 26. The cog-gear30 has a curving section 31, that extends from a point D to a point E,the point E being closer to the axle 13 than the point D. A32 is atoothed arm forming a part of the gear and adapted to mesh with theteeth of the arm 2S when the cog-gear 26 is manipulated to bring the twoarms into coincident position. The arm 32 is provided with a straightedge 33, adapted to receive the corresponding straight edge 29 of thecog-gear 26 as the gears move to bring the two arms into engagement.

In the practical operation of a plow when the plow is turned to theright the entire plow pivots on the heel of the rear plow of the two ingang, and for this reason the forward or furrow wheel should turn into aposition at right angles with the plows proper, so that the entire plowwill be turned in the proper circle. /Vhen, however, the entire plow isturned to the left, it pivots on the point of the forward plow proper,which brings the pivotal point closer to the forward wheel, causing theforward wheel to describe a very small circle and places the pivotalpoint in an entirelydifferent position from that in turning the entireplow to the right. It is, in view of the facts just stated, requisitethat the rear wheel 17 be moved into a different position relative tothe forward or furrow wheel 2 when the plow is turned to the right fromthat when the plow is turned to the left. In order to occasion thedifference, I construct the coggears 26 and 30 of the elliptic formshown, and the difference in movement between the forward and rearwheels is caused by reason of the axle of the rear wheel having a slowtravel imparted to it as the tongue of the plow is turned to the right,at which time the portion of the toothed section 27 near its axis is inengagement with the longest portion of the section 3l of the cog-gear30, whereas when the tongue is turned to the left the axle of the rearwheel receives its power from the portion of the section 27 most remotefrom its axis and in driving engagement with the portion of the section31 nearest the axis of the last-named section. It is therefore apparentthat when the tongue is turned to the left a greater speed is impartedto the axle 13 as the tongue approaches the limit of its swing, with theresult that the rear wheel is moved a greater distance relatively thanthe forward wheel 2, so that said wheels are caused to partake of aposition such that the entire plow will pivot on the point of theforward plow proper in the arc of a circle as it is turned, and theplows will be brought into the proper position with relation to theunplowed ground. As the entire plow is turned to the extreme left thesections 27 and 31 of the cog-gears become disengaged, the straight edge29 rides in contact with the straight edge 33, and the toothed arms 2Sand 32 come into engagement. These arms both extending to a much greaterdistance from the axes of the coggears than the point E of thecog-section 31, the power exerted by the cog-gear 26 upon the cog-gear30 is greatly diminished as soon as the sections 27 and 3l are partedfrom engagement, and a slight variation from the proper swing of theplow-tongue does not niaterially adect movement of the axle of the rearwheel, the cog-gears in this position being practically at rest.

A further feature of my invention has reference to an adjustable toothedsegment that receives the engagement of the dog of the plow-liftinglever. It frequently happens that in the use of a riding-plow it isdiscovered after laying oli' the land and making a few rounds the plowis either cutting too deep or not to a sufficient depth. When this isthe case with a riding-plow having the lifting-lever arranged to engagea toothed segment immovably fixed to the plow-frame, the movement of thelever so that its dog will engage between another pair of segment-teethcauses too great a difference in the depth it is desired the plow is tocut. For the purpose of permitting accu rate adjustment of the plow tothe desired depth I utilize an adjustable toothed segment 34:. (Seen indetail in Figs. VIII and X.) This segment is mounted on a pivot 35,carried by the main frame 1, is free at the end 36, and is adj ustablyconnected to the frame at the end 37. The end 37 of the segment isenlarged and provided with an elongated opening 38 and interior teeth39. The opening 38 is hid from view by the bolt-head in Fig. II. Theteeth 39 mesh with the teeth of a wheel 40, mounted on a bolt 41, thatpasses through the framey 1 and is equipped with a nut 42. On removingthe nut 42 the toothed wheel 40 may be removed and the toothed segment34 moved to the proper adjustment forwardly or rearwardly, after which,upon the toothed wheel and nut being again replaced, the segment issecurely held in the altered position and the lifting-lever ismaintained correctly to afford the desired depth of cut of the plows.

I claim as my invention- 1. In a riding-plow, the combination with `theforward and rear wheels and their axles,

of elliptical gearing by which said rear wheel IOO IIO

is turned, and means of connection between the axle of said forwardwheel and said gearing, substantially as described.

2. In a riding-plow, the combination with the forward and rear wheelsand their axles, of an elliptic gear carried by the rear-,wheel axle, ashaft mounted on the plow-frame, an elliptical gear on said shaftarranged to engage the gear on said rear-wheel axle, and means ofconnection between the forwardwheel axle and said shaft, substantiallyas set forth.

3. In a riding-plow, the combination of the forward and rear wheels, andtheir axles, of a shaft carried by the plow-frame, a cog-gear carried bythe rear-wheel axle, a cog-gear carried by said shaft adapted tointermesh with the first-mentioned cog-gear, said cog-gears each havinga curved section extending from a point close to the axis of the gear toa point more remote therefrom, and means of connection between theforward-wheel axle and said shaft, substantially as described.

4. In a riding-plow, the combination of the forward and rear wheels, andtheir axles, of a shaft carried by the plow-frame, a cog-gear carried bythe rear-wheel axle, a cog-gear carried by said shaft adapted tointermesh with the first-mentioned cog-gear, said cog-gears each havinga curved section extending from a point close to the axis of the gear toa point more remote therefrom said gears also being provided withtoothed arms terminating at greater distances from the axes of the gearsthan the closest approaches of said curved sections, and means ofconnection between the forward-wheel axle and said shaft, substantiallyas described.

5. In a riding-plow, the combination with the forward and rear wheelsand their axles, of a shaft carried by the plow-frame, interlneshingelliptical gearing carried by said shaft and the rear-wheel axle,sprocket-wheels carried by the forward-wheel axle and said shaft, chainsarranged in engagement with said sprocketfwheelsods connected to saidchains, and turnbuckles uniting said rods, substan tially as and for thepurpose set forth.

6. In a riding-plow, the combination with the plows proper, alifting-lever, and means of connection between said plows and saidlever; of a toothed segment pivoted to the plow-frame, said lever beingprovided with an opening containing teeth or corrugations, a toothedwheel arranged in said opening adapted to engage said teeth orcorrugations, and means for clamping said wheel, substane tially as setforth.

JOHN W. BROWN.

In presence of- L. L. KLEIN,

E. S. THOMAS.

